Just a reminder, that when you have night sights, the dots, front and back are a dullish, milky white and not the bright crisp white of a non illuminated sight.
This means that in very bright light there is a tendency to wash out and in twilight conditions, when the sight illumination is not brighter than the background they can appear to fade.
Not that there is anything wrong with them, I have them on my pistols, just be aware.
In my case I outline, not obscure, the sights with a small amount of bright white,high gloss, high temperature paint.